Custom Routing in Rails 5 - ruby-on-rails

Question

I'm having some issues with custom routing. What I'm looking to do is remove the model from the route and dynamically use the record name.
so instead of:
site.com/events/my-event
I would like it to be:
site.com/my-event
I hacked this to work with the below code, only issue is I can't access my admin namespace as it's being treated as an event record (and any other route):
get('/:id', to: redirect do |params, request|
id = request.path.gsub("/", "")
"/events/#{id}"
end)
I know this redirect is not right, I'm just not well versed in routing options. How should this be done properly?
routes.rb
Rails.application.routes.draw do
resources :events, param: :id, path: "" do
get 'login', to: 'sessions#new', as: :login
get 'logout', to: 'sessions#destroy', as: :logout
post 'sessions', to: 'sessions#create', as: :session_create
end
namespace 'admin' do
root "events#index"
resources :sessions, only: [:create]
get 'login', to: 'sessions#new', as: :login
get 'logout', to: 'sessions#destroy', as: :logout
resources :events
end
end

Answer 1

Rails lets you specify what a routing URL should look like:
https://guides.rubyonrails.org/routing.html#translated-paths

Answer 2

You don't need redirect.
You need to match all requests to one controller/action.
get '/(*all)', to: 'home#app'
Inside this action check what is coming in params and render appropriate view.
PS: it will capture all requests, even for not found images, js, etc.

Answer 3

(1) To fix /admin to go to the right path, move the namespace line above the events resources so that it is matched first:
Rails routes are matched in the order they are specified 2.2 CRUD, Verbs, and Actions
# routes.rb
namespace :admin do
root "events#index"
#...
resources :events
end
resources :events, param: :name, path: ""
Use :param and :path to match for site.com/myevent instead of site.com/events/:id
Your events controller:
# events_controller.rb
class EventsController < ApplicationController
# ...
private
def set_event
#event = Event.find_by(name: params[:name])
end
end
Your admin events controller:
# admin/events_controller.rb
class Admin::EventsController < ApplicationController
# ...
private
def set_event
#event = Event.find params[:id]
end
end
TIP: To get a complete list of the available routes use rails routes in your terminal 5.1 Listing Existing Routes